Dynamics of interacting skyrmions in magnetic nano-track

Controlling multiple skyrmions in nanowires is important for their implementation racetrack memory or neuromorphic computing. Here, we report on the dynamical behavior of two interacting confined devices with a comparison to single skyrmion case. Although shrink near edges and follow helical path, different. Because leading between edge trailing one, its size reduced further collapses at lower current density compared For higher density, both are annihilated core-collapse mechanism one followed by bubble-collapse one.